Conveying-belt



(No Model.) 4 Sheets-Sheet 1.

D. BRENNAN, Jr.

GONVEYINGIBELT.

Patented Jan. 15, 1889.

ATTORNEYSE 4 Sheets-Sheet 2.

(No Model.)

- D. BRENNAN, Jr.-

CONVEYING BBLT.

No. 396,1 36. Patented Jan. 15, 1889..

WITNESSES: I mvsmon: 7 6% K 7 4625M BY ATTORNEYS.

M PETERS. Hnlo-UI G P W Wnhlnglnn. D, C.

(No Model.) 4 Sheets-Sheet 3. D. BRENNAN, Jr.

CONVEYING BELT. N0. 396,136,. Patented Jan} 15, I889.

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BY .Mu/m g ATTORNEYS.

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(No Model.) 4 Sheets-Sheet 4.

D. BRBNNAN,J1.

, CONVEYING BELT. No. 396,136. Patented Jan. 15, 1889.

WIfNESSESL' IIVVENTOR:

Arron/ms.

N. PETERS. Pholo-Lillwgraphcn wuhi c.

NITED STATES ATENT CONVEYING-BELT.

SPECIFICATION forming part of Letters Patent No. 396,136, dated January15, 1889.

Application filed J auuary 6, 1888. Serial No. 259,942. (No model.)

To all whom, it nmy concern;

Be it known that I, DANIEL BRENNAN, Jr., of Salt-ersville, in the countyof Hudson and State of New Jersey, have invented a new and ImprovedConveying, Elevating, and Driving Belt, of which the following is afull, clear, and exact description.

Conveyer-belts, working horizontally or on slight inclines, when thematerials to be handled are too destructive of the material of which thebelts are made, are usually covered with metallic plates to preventexcessive wear; and, in order that a greater capacity for a like widthmay be secured, such belts have been covered with plates or pans havingsides formed thereon. with projecting flights or ledges and pans orbuckets with transverse ends or bottoms as well as sides have beenattached to the belts to keep the materialfrom slipping back. Invertical elevators buckets of various forms are fastened to the belts.The plates, pans, buckets, &c., are also frequently secured to chains.

Belt-conveyers are found to be defective by reason of the fact that someof the conveyed material will work in between the plates, pans orbuckets, and the surface of the belts, greatly injuring the same, andalso by reason of their general lack of durability. In chain conveyersthe wear and friction of the numerous joints under tension, especiallyin working gritty substances, is found to be excessive, and the chainsare also liable to sudden rupture.

The object of my invention is to provide endless conveyers and elevatorsof simple and durable construction free from such defects; and a furtherobject and result of my invention is to increase and make more availablethe transmissive power of endless ropes.

My invention consists of a pair of endless ropes covered, connected, andheld apart throughout by an endless series of narrow metallic bars orwires securely looped over and upon them, so as to form an endless beltthat will hold and convey materials and transmit power, and which iscapable of being driven by ordinary maohine-pulleys; an dit alsoconsists in making the cross-bars and attachments of such shapes as willform sides, flights, buckets, &c., upon the belt to adapt it for Onsteep inclines plates working horizontally, vertically, or at anyrequired angle, as hereinafter fully described.

The exact form or shape of the connecting bars and their loops,extensions, and attachments may be of almost endless variety; but inorder that my invention may be thoroughly understood I append a fulldescription of the best types and forms thereof now known to me.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a view of a short piece of belt of my invention, showing theropes in section, covered, connected, and held apart by wires loopedover the same. Fig. 2 is a sectional View taken on line a: a" of Fig. 1.Fig. 3 is a view similar to Fig. 1, amodified form of belt, however,being represented, the wires in this case being replaced by narrow flatstrips. Fig. 4 is a cross-sectional view taken on line w w of Fig. 3.Fig. 5 is a view of a section of the belt, the wires forming thecross-bars eX- tending beyond the loops and being turned upward andoutward to form sides, whereby the belt will have a greater capacity fora like width. Fig. 6 is a sectional view on line so at of Fig. 5. Fig. 7is a view similar to Fig. 5, except that flat strips are substituted forthe wires shown in Fig. 5. 8 is a cross-sectional view on line a: 00 ofFig. 7. Fig. 9 is a view of a portion of abelt representingaconstruction wherein at certain distances some of the loops are madeshorter than others, so that flat bars formed with upturned lips may beslipped between the bodies of the bars and the ends of the shortenedloops, these ledges or lips being employed when material is to beconveyed up an incline. Fig. 10 is a cross sectional view on line :0 a:of Fig. 9. Fig. 11 is a view similar to Fig. 9, exceptt-hat the ends ofthe bars are bent over, up, and outward to form sides, and the lip,ledge, or flight is deeper than in the construction shown in Fig. 9.Fig. 12 is a cross-sectional view on line at of Fig.1]. Fig. 13 is aviewrepresenting a construction similar to that shown in Fig. 11, exceptthat the upturned lip forms a bucket. Fig. 1% is a cross-sectional viewtaken on line so a: of Fig. 13. Fig. 15' is a view of a section of abelt wherein the cross bars or wires are formed from malleable iron.Fig. 1G is a cross-sectional view on line a: u of Fig. 15. Fig. 17 is aview of a construction wherein the cross-bars are formed from malleableiron, and wherein there are upper extensions and lower extensions. Fig.18 is a cross-sectional view on line :1: :r of Fig. 17. Fig. 1.9 is aview of a modified construction wherein the extensions project at rightangles from the main. portions of the strips. Fig. 20 is across-sectional view on line .1) .r of Fig. 1.9. Fig. 21 is a viewrepresenting the belt as being provided with buckets formed of malleableiron. Fig. 22 is a cross-secthose of a like type can be cut t'rom stripsof wire or metal. and their loops formed and bent over the ropes 10 invarious ways well known to mechanics. The bars can also be cast oltmalleable iron or the like, and Figs. 15 and 16 show a convenient formof the same. The ledges or flights can be cast on some of the bars, asshown at 17.

Fi 17 and Sshowcast bars forming, with the ropes, a belt having high andflaring sides. Some bars having ledges, as 1.7, east on them areinserted to hold the materials on inclines. lI)ownward projections onsome of the bars,

i as 18, will keep the belts running true withis a perspective view of acomplete belt and that are connected and spaced throughout 1 theirlength by narrow metallic strips, bars, or wires 11, said bars, stripsor wires being t'orined with loops 1 2, whichv overlap the ropes, thebars being placed side by side throughout the length of the rope, as isclearly shown.

In Figs. 1 and 2 1 illustrate the ropes as they appear when connected bylooped wires, and this type I consider the best for the transmission otpower, as will be hereinafter explained.

Figs. 3 and 1 represent a construction simi lar to the constructionshown in Figs. 1 and .3, except that in place of wires narrow flat barsare employed.

Figs. 5 and 6 represent-a construction wherein the wires forming thecross-bars are extended beyond the loops and. turned upward and outwardto form sides 13, whereby the capacity of the belt will be greatlyincreased.

Figs. 7 and 8 represent a construction similar to that shown in Figs. 5and (3, except that narrow flat bars are substituted for the wires.

In Figs. ll and 10 there is shown a construetion wherein the loops 1:?0t certain of the bars 11 are made shorter than the others, so that fiatbars 14 can be inserted and held thereunder, these bars being preferablyformed with upturned lips 15, the bars constituting ledges or flightswhich enable the belt to convey materials up inclines.

Figs. 11 and 12 represent a eonstructimi similar to the one lastdescribed, except that the bars 11. are formed with upturned ends, as inthe construction illustrated in Figs. 7 and 8, and the lip 15 is madedeeper than the one shown in Figs. 9 and 10.

cross bars or strips 1.1 above described and out the aid of flanges onthe pulleys or of guide-rollers it' so preferred.

\Vheuever conveyer-belts are needed with a plain surface from whichv thematerial can be easily removed at any required point, coustructions ofthe types shown in Figs. 1 and. b may be used in reversed position, andthe side ridges formed by the ropes and loops will keep the belts on thepulleys. The construction shown in Fig. 15 might also be used as justdescribed, it the ledges 17 were not employed.

Figs. 1.) and 20 show cast: bars forming, with the ropes, a belt havinghigh vertical sides. Jars having flights or partitions, as 19,castintegrally therewith can be inserted at intervals when it isrequired to work the belt on steep inclines. The parts of the barsforming the loops are shown tapering, which construction can be used inallv styles of the bars whenever the loops would otherwise beunnecessarily stilt.

Figs. 21 and 22 show a bucket, 20,1?01. elevating materials east fast totwo of the bars forming the belt. The material cannot work under thesebuckets either in taking up or discharging. The pulley sides of the barsare made slightly convex in section, so that they may come in contactwith the pulleys centrally when going around them. The space under thebuckets is to allow the bars therein. and the ropes to conform to thecurve of the pulleys.

In order to preserve the pliability of the ropes and resulting belt, Imake the bars in all the constructions quite narrow; but their breadthcan be, in a measure, proportionate to the diameter of the ropes and.pulleys. As the bars mutually support and keep each other in place,their grip upon theropes need. never be so tight as to prevent thenatural bendiu and twisting ot the strands and lilaments while working;but to further insure pliability in constructions where fiat bars areused and the belt to work around pulleys of small diameter, I make theinsides of the loops slightly convex in section, as shown in Fig. 22, sothat the ropes may not be held rigidly to a straight line for any partof their length, and all loops might be made in this form.

The parts of the bars forming the sides oi. the belts will extendradially and have wedge shaped spaces between them when going around thepulleys; but this is seldom found objectionable, as the finest of thematerials while being conveyed settles to the bottom, where the openingsthus made are scarcely perceptible and the centrifugal action holds thematerial to a straight path. The parts of the barsforming the sides ofthe conveyors may be made slightly tapering, as at 2], Fig. 20, so thatthe upper part of the endless belt may have perfect freedom to sagbetween supports, if so desired.

In the manufacture of the belts I prefer that the ropes should be well.stretched by running them for a time over pulleys under strong tensionbefore the bars are looped on but whenever the ropes stretch from useadditional bars can be inserted and thus always kept in. sufficientlyclose contact with each other.

The use of endless ropes for driving machinery has heretofore beengreatly restricted by reason of their want of width or surface forfrictional contact with pulleys, and many kinds of grooved wheels andwheels having indentations to engage attachments upon the ropes havebeen devised to overcome this defect. In my invention the ropes aresupplied by means of the cross-bars with an.

amount of frictional contact proportionate to their strength, and theadditional weight also thereby supplied renders them suitable forshortand eoniparatively-slow transi'nissions, for which ropes have notheretofore been well adapted.

For driving purposes I prefer the belts made of the type shown in Figs.1 and 2, with cross-wires of comparatively small diameter and of such atemper that the loops will have an elastic grip upon the ropes. Theslight variation from being in line with each other, which naturallyoccurs in making the loops, causes the bars to form, when in contact, a

' surface slightly elastic lengthwise as well as transversely to thebelt, which is of value in preventing shock and is an aid to durabilityand effectiveness. Either side of the belt can be used next the pulleysand the cross-bars will conform to the surface of pulleys with crownedfaces.

I am aware that rin both open and closed have heretofore been used tocover single cables and ropes for the purpose of holding the strands ofthe same together and for pre venting wear, and that stops and flightshave before now been attached to single and to pairs of endless ropes,so that they may engage indentations of wheels and so that the ropes maybe engaged by grips used for traction purposes.

Having I thus described my invention, I claim as new and desire tosecure by Letters Patent- 1. A belt consisting of a series of metallicstrips having end loops strung side by side upon a pair of ropes,substantially as shown and described.

2. The combination, in a belt, of endless ropes and a series of metallicstrips having end loops and arranged side by side throughout the lengthof the belt and having a plain inner or contact surface, substantiallyas shown and described.

3. The combination, in a belt, of a pair of endless ropes connected andheld apart by flexible metallic transverse strips arranged side by sidethroughout the length of the belt and having looped ends encompassingthe ropes, substantially as shown and described.

4. The combination, in a belt, of two ropes, and a series of abuttingmetallic connections between and spacing said ropes and provided withend loops encompassing, but not firmly clamping, said ropes, the saidstrips forming a contact-surface of practically unbroken continuit-y,substantiallyas shown and described.

5. The combination, in a belt, of a pair of ropes, and a series ofmetallic strips connecting said ropes and abutting each other, wherebythe said strips form the entire contactsurface of the belt, and whichcontact-surface is of practically unbroken continuity throughout thelength of the belt, substantially as shown and described.

(3. In abel t, the combination, with two ropes, of j uXtaposedconnecting-strips provided with looped ends through which the ropespass, and with upwardly-extending projections forming a continuous sideflange along the belt, substantially as shown and ('lescribed.

7. The combination, with a pair of endless ropes, of a series oftransverse strips connected to and spacing said ropes, the strips beingprovided with end loops encompassing the ropes, the interior surface ofthe loops being convcxed, substantially as described.

DANIEL BRENNAN, JR.

\Vitnesses:

ED\VARD KENT, J12, (J. SEDo'WIoK.

